\documentclass{article}
\usepackage{amsmath}
\usepackage{rotating}

\begin{document}
\begin{sidewaystable}
  \begin{tabular}{cccccccccc}
    $\alpha$ & $r_{ss}$ & $r^k_{ss}$ (Annual) & $\delta_0$ & $\gamma_A$ & $\gamma_{A_x}$ & i/y & $\sigma_c$ & $\Delta\overline{GDP}$ & $\Delta\overline{INV}$ \\ \hline
    \input{ParameterOutputLatex.txt}
  \end{tabular}
\end{sidewaystable}

\end{document}

